WEATHER BLOG: Wacky Timeline

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1. Monday (just before daybreak to late afternoon). Most likely accumulations around 1-3″
2. Tuesday night – Wednesday. Mixed precipitation changes to rain
3. Next weekend. Both the American Model and European Model have the caboose of these disturbances crossing the east with a major cyclone forming near the Mid Atlantic Coast. This storm has potential to bring a significant snow to the Northeast … most likely west of the I-95 corridor.

Breezes from the south and southwest are directly milder air across the Northeast seaboard early Sunday morning with temperatures ranging from the upper 20s in the coldest spots to around 35 in the warmest places. The mild weather will linger into Super Bowl Sunday as a cold front moves from the west slopes of the Appalachians early Sunday morning to near just off the Northeast Coast by the evening. Currently there are showers surrounding the area from Ohio to western New York. As the front moves east, it will lose its punch and cause the showers to become spotty and light by the time the front reaches the region. Therefore we are calling for cloudy conditions with perhaps a light shower or two during the afternoon and early evening, with the best chances for rain over the interior.

Sunday night, the aforementioned cold front will stall from off the Mid Atlantic Coast to the southern Appalachians and a jet stream disturbance traveling northeast along the front will cause a new low pressure zone to form on this frontal zone and move from near Atlanta very early Monday morning to near Cape Hatteras Monday afternoon. As the low moves in this trajectory it will cause precipitation to spread east over the region after midnight through Monday afternoon. We think the lower part of the atmosphere will be warm enough for the precip to probably start as rain, but then winds from the north will deliver colder air causing rain to turn to snow. Snow should be falling around or just after rush hour Monday and continue
through the mid afternoon before ending around dusk.

Accumulations will range from 1 to 3 inches, with 3 to 6 north of the Beltway. High pressure will then bring drier air to the region Monday night and Tuesday as it moves from Lake Erie (Monday evening) to Cape Cod (Tuesday eve). Temperatures will be seasonable.